AGM Batteries

I gather these don't take too kindly to the heat experienced under the bonnet and you should mount them elsewhere if you want to get the kind of life-expectancy they are reknowned for. As for their ability to start a diesel, I'm not sure; sorry I can't be more help.
Cheers
Roachie

According to Remco, their AGM's life will be reduced to 1/5th if you keep it at 50 deg (typical engine compartment temp) compared with 20 degrees. Of course the battery will only be at this temperature while you are are driving, so the average temperature will be less.

The 5-second discharge rating of the 80AHr Remco is 550 amps.

Mike

There is an interesting discussion on AGMs here

http://www.fridge-and-solar.net/agm.htm

Hi Lorne

I had one of the AGM's in the GU. No problem starting the Diesel and very quick to recharge. Val from fridge and solar recommended that I put a heat shield around the battery like the original one on the starting battery with the air duct to increase the life of the battery.

Heat under the bonnet is a real problem in modern cars and really does kill batteries, the Mondeo would kill one every 18 months without fail
Ray

Hi Lorne,

I have a 98 Prado. The Prado's have little room under the bonnet for a second battery, let alone one of decent size, so i ran it into the rear cargo area. For this reason i used a 'Full River' 100a/h AGM. Cost me $210. I built a battery box from ply and installed into the box, a fridge plug and 2 x cigarette lighter outlets for the lights (Cost $50). Battery connects to an Anderson plug on side of box and leads from Redarc solonoid run from under bonnet to other Anderson Plug, which connects them together. Hey prestow, you now have a removeable power source. It sits nicely behind the fridge in an area where little is stored anyway so it doesn't get in the way. Cabin temp is not a problem.

This set up is not for every one, but i find it works very well with greater versatility.

Cheers

Willow

A. have a good look in the archives. B. I use an 80amp hr Fullriver AGM HGL as my start batt and a 90amp Fullriver AGM HGL as my aux batt both underbonnet in standard tojo batt carriers in my 80series turbo diesel , live in QLD , hot ?? yes !!! Never a problem starting or recharging ,also run 3x 80amp Fullriver AGM HGL in/on camper trailer recharged via anderson plug and /or solar whilst camped ,, most people seem to have the FALSE impression that AGMs cannot handle heat ,, cows excrement !!! AGMs are used in some of the hottest and coldest places on Earth and off it !! ie: the space station /shuttles ect so a 4x4 enviroment is childs play.